<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>关卡4</title>
        <link rel="stylesheet" href="game_4.css"/>
    </head>
    <body>
        <h1>关卡 4</h1>
        <div class="game4"></div>
        <p>
            <input type="text" class="input4" id="key4"><br>
            <input type="button" value="submit" id="submit4">
        </p>
        <h4>------produced by cannon------</h4>
    </body>
    <script src="game_4.js"></script>
</html>
